function openCredits(_idioma){
	var idioma;
	switch(_idioma){
		case 'ca':
			idioma = 0;
			break;
		case 'es':
			idioma = 1;
			break;
		case 'en':
			idioma = 2;
			break;
		default:
			idioma = 0;
			break;
	}
    var url = 'http://bcn.es/scannerbcn/credits.html?idioma='+idioma;
    
    openWindow(url, null, 400, 180);
}

function openWindow(url, name, w, h, x, y, scroll){

    var screenWidth = screen.width;
    var screenHeight = screen.height;

    var wW = (w!=null) ? w : screenWidth-50;
    var wH = (h!=null) ? h : screenHeight-150;
        
    var wX = (x!=null) ? x : Math.round(screenWidth/2-(wW/2));
    var wY = (y!=null) ? y : Math.round(screenHeight/2-(wH/2));
    
    var name = (name != null) ? name : 'dyPopup';
    
    var scrollbars = (scroll) ? scroll : 0;
    
    var win = window.open(url, name, 'resizable=0,scrollbars='+scrollbars+',status=0,location=0,toolbar=0,menubar=0,width='+wW+',height='+wH+',screenX='+wX+',screenY='+wY+',left='+wX+',top='+wY+'');

    return win;
}